Implement API writing

app/src/main/AndroidManifest.xml

@@ -2,7 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="eu.depau.ddroid">
 
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
 
     <application
         android:allowBackup="true"
@@ -21,6 +21,9 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+        <service
+            android:name=".services.UsbAPIWriteService"
+            android:exported="false"/>
     </application>
 
 </manifest>

app/src/main/java/eu/depau/ddroid/StateKeeper.kt

@@ -1,6 +1,8 @@
 package eu.depau.ddroid
 
+import android.hardware.usb.UsbDevice
 import android.net.Uri
+import com.github.mjdev.libaums.UsbMassStorageDevice
 import eu.depau.ddroid.abc.WizardFragment
 import eu.depau.ddroid.values.FlashMethod
 import eu.depau.ddroid.values.ImageLocation
@@ -13,4 +15,7 @@ object StateKeeper {
     var imageLocation: ImageLocation? = null
     var streamingWrite: Boolean = false
     var imageFile: Uri? = null
+
+    var usbDevice: UsbDevice? = null
+    var usbMassStorageDevice: UsbMassStorageDevice? = null
 }

app/src/main/java/eu/depau/ddroid/abc/ClickListener.kt

@@ -0,0 +1,9 @@
+package eu.depau.ddroid.abc
+
+import android.view.View
+
+interface ClickListener {
+    fun onClick(view: View, position: Int)
+
+    fun onLongClick(view: View, position: Int)
+}

app/src/main/java/eu/depau/ddroid/abc/UsbWriteService.kt

@@ -0,0 +1,99 @@
+package eu.depau.ddroid.abc
+
+import android.app.IntentService
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.net.Uri
+import android.os.Build
+import eu.depau.ddroid.R
+import eu.depau.ddroid.utils.getFileName
+import eu.depau.ddroid.utils.toHRSize
+
+
+abstract class UsbWriteService(name: String) : IntentService(name) {
+    val TAG = name
+    val FOREGROUND_ID = 1931
+    val WRITE_PROGRESS_CHANNEL_ID = "eu.depau.ddroid.notifications.USB_WRITE_PROGRESS"
+    private var prevTime = System.currentTimeMillis()
+    private var prevBytes = 0L
+    private var notifyChanRegistered = false
+
+    fun getNotificationBuilder(): Notification.Builder {
+        if (!notifyChanRegistered) {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                val channame = "USB write progress"
+                val description = "Displays the status of ongoing USB writes"
+                val importance = NotificationManager.IMPORTANCE_LOW
+                val channel = NotificationChannel(WRITE_PROGRESS_CHANNEL_ID, channame, importance)
+                channel.description = description
+
+                // Register the channel with the system; you can't change the importance
+                // or other notification behaviors after this
+                val notificationManager = getSystemService(NotificationManager::class.java)
+                notificationManager!!.createNotificationChannel(channel)
+            }
+            notifyChanRegistered = true
+        }
+
+        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
+            Notification.Builder(this, WRITE_PROGRESS_CHANNEL_ID)
+        else
+            Notification.Builder(this)
+    }
+
+    fun updateNotification(usbDevice: String, uri: Uri, bytes: Long, total: Long) {
+        // Notification rate limiting
+        val time = System.currentTimeMillis()
+        if (time <= prevTime + 1000)
+            return
+
+        val speed = ((bytes - prevBytes).toDouble() / (time - prevTime).toDouble()).toHRSize()
+        prevTime = time
+        prevBytes = bytes
+
+        val perc: Int = (bytes.toDouble() / total * 100.0).toInt()
+
+        val notificationManager = getSystemService(NOTIFICATION_SERVICE) as NotificationManager
+        notificationManager.notify(FOREGROUND_ID, buildForegroundNotification(usbDevice, uri, bytes, total, "$perc% • $speed/s"))
+    }
+
+    fun errorNotification() {
+        val notificationManager = getSystemService(NOTIFICATION_SERVICE) as NotificationManager
+
+        val b = getNotificationBuilder()
+                .setContentTitle("Write failed")
+                .setContentText("The USB drive may have been unplugged while writing.")
+                .setOngoing(false)
+                .setSmallIcon(R.drawable.ic_usb_white_24dp)
+
+        notificationManager.notify(FOREGROUND_ID, b.build())
+    }
+
+    fun buildForegroundNotification(usbDevice: String, uri: Uri, bytes: Long, total: Long, subText: String? = null): Notification {
+        val progr: Int
+        val indet: Boolean
+
+        if (total < 0) {
+            progr = 0
+            indet = true
+        } else {
+            progr = (bytes.toFloat()/total * 100).toInt()
+            indet = false
+        }
+
+        val b = getNotificationBuilder()
+
+        b.setContentTitle("Writing image")
+                .setContentText("${uri.getFileName(this)} to $usbDevice")
+                .setOngoing(true)
+                .setSmallIcon(R.drawable.ic_usb_white_24dp)
+                .setProgress(100, progr, indet)
+
+        if (subText != null)
+            b.setSubText(subText)
+
+        return b.build()
+    }
+
+}

app/src/main/java/eu/depau/ddroid/abc/WizardFragment.kt

@@ -4,10 +4,13 @@ import android.content.Intent
 import android.support.v4.app.Fragment
 import android.view.View
 
-abstract class WizardFragment : Fragment() {
+abstract class WizardFragment() : Fragment() {
-    abstract fun nextStep(view: View)
+    private lateinit var wizardActivity: WizardActivity
+
+    abstract fun nextStep(view: View?)
 
     open fun onFragmentAdded(activity: WizardActivity) {}
+    open fun onFragmentRemoving(activity: WizardActivity) {}
     open fun onRadioButtonClicked(view: View) {}
     open fun onCheckBoxClicked(view: View) {}
     open override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {}

app/src/main/java/eu/depau/ddroid/activities/MainActivity.kt

@@ -1,15 +1,49 @@
 package eu.depau.ddroid.activities
 
+import android.app.PendingIntent
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+import android.hardware.usb.UsbDevice
+import android.hardware.usb.UsbManager
 import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import eu.depau.ddroid.R
+import eu.depau.ddroid.StateKeeper
 import eu.depau.ddroid.abc.WizardActivity
 import eu.depau.ddroid.abc.WizardFragment
 import eu.depau.ddroid.fragments.FlashMethodFragment
+import eu.depau.ddroid.fragments.UsbDriveFragment
 import kotlinx.android.synthetic.main.activity_main.*
 
 class MainActivity : WizardActivity() {
+    val TAG = "MainActivity"
+    val ACTION_USB_PERMISSION = "eu.depau.ddroid.USB_PERMISSION"
+    lateinit var mUsbPermissionIntent: PendingIntent
+
+    private val mUsbReceiver = object : BroadcastReceiver() {
+
+        override fun onReceive(context: Context, intent: Intent) {
+            if (intent.action == ACTION_USB_PERMISSION) {
+                synchronized(this) {
+                    val device: UsbDevice? = intent.getParcelableExtra(UsbManager.EXTRA_DEVICE)
+
+                    val result = intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)
+                    if (result)
+                        device?.apply {
+                            StateKeeper.usbDevice = this
+                        }
+
+                    if (StateKeeper.currentFragment is UsbDriveFragment)
+                        (StateKeeper.currentFragment as UsbDriveFragment).onUsbPermissionResult(device, result)
+                }
+            }
+        }
+    }
+
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
@@ -22,14 +56,22 @@ class MainActivity : WizardActivity() {
         transaction.replace(R.id.fragment_layout, fragment)
         transaction.commit()
         fragment.onFragmentAdded(this)
+
+        val usbManager = getSystemService(Context.USB_SERVICE) as UsbManager
+        mUsbPermissionIntent = PendingIntent.getBroadcast(this, 0, Intent(ACTION_USB_PERMISSION), 0)
+        val filter = IntentFilter(ACTION_USB_PERMISSION)
+        registerReceiver(mUsbReceiver, filter)
     }
 
     override fun goToNewFragment(fragment: WizardFragment) {
+        StateKeeper.currentFragment?.onFragmentRemoving(this)
+
         val transaction = supportFragmentManager.beginTransaction()
         transaction.setCustomAnimations(R.anim.slide_in_right, R.anim.slide_out_left)
         transaction.replace(R.id.fragment_layout, fragment)
         transaction.addToBackStack(null)
         transaction.commit()
+
         fragment.onFragmentAdded(this)
     }
 

app/src/main/java/eu/depau/ddroid/fragments/ConfirmInfoFragment.kt

@@ -0,0 +1,87 @@
+package eu.depau.ddroid.fragments
+
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import eu.depau.ddroid.R
+import eu.depau.ddroid.StateKeeper
+import eu.depau.ddroid.abc.WizardActivity
+import eu.depau.ddroid.abc.WizardFragment
+import eu.depau.ddroid.services.UsbAPIWriteService
+import eu.depau.ddroid.utils.*
+import eu.depau.ddroid.values.FlashMethod
+import eu.depau.ddroid.values.WizardStep
+import kotlinx.android.synthetic.main.fragment_confirminfo.view.*
+
+/**
+ * A placeholder fragment containing a simple view.
+ */
+class ConfirmInfoFragment : WizardFragment() {
+    val TAG = "ConfirmInfoFragment"
+    var canContinue = false
+
+    override fun nextStep(view: View?) {
+        if (!canContinue) {
+            view?.snackbar("Cannot write image to USB drive")
+            return
+        }
+
+        context?.toast("Check notification for progress")
+
+        val intent = Intent(activity, UsbAPIWriteService::class.java)
+        intent.setDataAndType(StateKeeper.imageFile, "application/octet-stream")
+        intent.putExtra("usbDevice", StateKeeper.usbDevice)
+        activity?.startService(intent)
+        activity?.finish()
+    }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
+                              savedInstanceState: Bundle?): View? {
+        StateKeeper.currentFragment = this
+        StateKeeper.wizardStep = WizardStep.CONFIRM
+
+        val view = inflater.inflate(R.layout.fragment_confirminfo, container, false)
+
+        view.confirm_sel_method.text = when (StateKeeper.flashMethod) {
+            FlashMethod.FLASH_API -> getString(R.string.flash_dd_usb_api)
+            FlashMethod.FLASH_DD -> getString(R.string.flash_dd_root)
+            FlashMethod.FLASH_UNETBOOTIN -> getString(R.string.flash_unetbootin)
+            FlashMethod.FLASH_WOEUSB -> getString(R.string.flash_woeusb)
+            else -> null
+        }
+
+        view.confirm_sel_image.text = StateKeeper.imageFile?.getFileName(context!!)
+
+        if (view.confirm_sel_image.text == null)
+            view.confirm_sel_image.text = getString(R.string.unknown_filename)
+
+        val imgSize = StateKeeper.imageFile?.getFileSize(context!!)
+        view.confirm_sel_image_size.text = imgSize?.toHRSize()
+
+        view.confirm_sel_usbdev.text = StateKeeper.usbDevice?.name
+
+        StateKeeper.usbMassStorageDevice!!.init()
+        val blockDev = StateKeeper.usbMassStorageDevice?.blockDevice
+
+        if (blockDev != null) {
+            val devSize = (blockDev.size.toLong() * blockDev.blockSize.toLong())
+            view.confirm_sel_usbdev_size.text = devSize.toHRSize()
+
+            if (imgSize!! > devSize)
+                view.confirm_extra_info.text = getString(R.string.image_bigger_than_usb)
+            else {
+                view.confirm_extra_info.text = getString(R.string.tap_next_to_write)
+                canContinue = true
+            }
+        } else {
+            view.confirm_extra_info.text = getString(R.string.cant_read_usbdev)
+        }
+
+        return view
+    }
+
+
+}

app/src/main/java/eu/depau/ddroid/fragments/FlashMethodFragment.kt

@@ -1,7 +1,6 @@
 package eu.depau.ddroid.fragments
 
 import android.os.Bundle
-import android.support.design.widget.Snackbar
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -9,6 +8,7 @@ import eu.depau.ddroid.R
 import eu.depau.ddroid.StateKeeper
 import eu.depau.ddroid.abc.WizardActivity
 import eu.depau.ddroid.abc.WizardFragment
+import eu.depau.ddroid.utils.snackbar
 import eu.depau.ddroid.values.FlashMethod
 import eu.depau.ddroid.values.WizardStep
 
@@ -16,9 +16,9 @@ import eu.depau.ddroid.values.WizardStep
  * A placeholder fragment containing a simple view.
  */
 class FlashMethodFragment : WizardFragment() {
-    override fun nextStep(view: View) {
+    override fun nextStep(view: View?) {
         if (StateKeeper.flashMethod == null)
-            Snackbar.make(view, "Please select writing method", Snackbar.LENGTH_LONG).show()
+            view?.snackbar(getString(R.string.please_select_writing_method))
         else
             (activity as WizardActivity).goToNewFragment(ImageLocationFragment())
     }

app/src/main/java/eu/depau/ddroid/fragments/ImageLocationFragment.kt

@@ -6,7 +6,6 @@ import android.content.Intent
 import android.content.pm.PackageManager
 import android.net.Uri
 import android.os.Bundle
-import android.provider.OpenableColumns
 import android.support.design.widget.Snackbar
 import android.support.v4.app.ActivityCompat
 import android.support.v4.content.ContextCompat
@@ -14,16 +13,18 @@ import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.Button
-import android.widget.CheckBox
-import android.widget.EditText
 import eu.depau.ddroid.R
 import eu.depau.ddroid.StateKeeper
 import eu.depau.ddroid.abc.WizardActivity
 import eu.depau.ddroid.abc.WizardFragment
+import eu.depau.ddroid.utils.getFileName
+import eu.depau.ddroid.utils.snackbar
 import eu.depau.ddroid.values.FlashMethod
 import eu.depau.ddroid.values.ImageLocation
 import eu.depau.ddroid.values.WizardStep
+import kotlinx.android.synthetic.main.activity_main.*
+import kotlinx.android.synthetic.main.fragment_select_location.*
+import kotlinx.android.synthetic.main.wizard_fragment_layout.*
 
 
 /**
@@ -43,7 +44,7 @@ class ImageLocationFragment : WizardFragment() {
     }
 
     fun setStreamingCheckBoxAvailability(context: WizardActivity) {
-        val checkBox = context.findViewById<CheckBox>(R.id.streaming_write_checkbox)
+        val checkBox = streaming_write_checkbox
 
         if (checkBox == null)
             return
@@ -71,8 +72,10 @@ class ImageLocationFragment : WizardFragment() {
             else -> null
         }
 
-        activity?.findViewById<Button>(R.id.pick_file_btn)?.isEnabled = StateKeeper.imageLocation == ImageLocation.LOCAL
+        fab?.show()
-        activity?.findViewById<EditText>(R.id.img_url_textview)?.isEnabled = StateKeeper.imageLocation == ImageLocation.REMOTE
+
+        pick_file_btn?.isEnabled = StateKeeper.imageLocation == ImageLocation.LOCAL
+        img_url_textview?.isEnabled = StateKeeper.imageLocation == ImageLocation.REMOTE
 
         setStreamingCheckBoxAvailability(activity as WizardActivity)
         updateFileButtonLabel(activity as WizardActivity)
@@ -87,9 +90,9 @@ class ImageLocationFragment : WizardFragment() {
         }
     }
 
-    override fun nextStep(view: View) {
+    override fun nextStep(view: View?) {
         if (StateKeeper.imageLocation == null) {
-            Snackbar.make(view, getString(R.string.select_image_location), Snackbar.LENGTH_LONG).show()
+            view?.snackbar(getString(R.string.select_image_location))
             return
         }
 
@@ -98,13 +101,13 @@ class ImageLocationFragment : WizardFragment() {
                 StateKeeper.imageFile = getRemoteImageUri(activity as WizardActivity)
             } catch (e: RuntimeException) {
                 Log.e(TAG, "Invalid URI specified", e)
-                Snackbar.make(view, getString(R.string.provided_url_invalid), Snackbar.LENGTH_LONG).show()
+                view?.snackbar(getString(R.string.provided_url_invalid))
                 return
             }
         }
 
         if (StateKeeper.imageFile == null) {
-            Snackbar.make(view, getString(R.string.provide_image_file), Snackbar.LENGTH_LONG).show()
+            view?.snackbar(getString(R.string.provide_image_file))
             return
         }
 
@@ -122,7 +125,7 @@ class ImageLocationFragment : WizardFragment() {
 
 
         }
-        (activity as WizardActivity).goToNewFragment(USBDriveFragment())
+        (activity as WizardActivity).goToNewFragment(UsbDriveFragment())
     }
 
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
@@ -130,9 +133,9 @@ class ImageLocationFragment : WizardFragment() {
             MY_PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE -> {
                 // If request is cancelled, the result arrays are empty.
                 if ((grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
-                    nextStep(activity!!.findViewById(R.id.fragment_layout))
+                    nextStep(fragment_layout)
                 } else {
-                    Snackbar.make(activity!!.findViewById(R.id.fragment_layout), getString(R.string.storage_perm_required_explaination), Snackbar.LENGTH_LONG).show()
+                    Snackbar.make(fragment_layout, getString(R.string.storage_perm_required_explaination), Snackbar.LENGTH_LONG).show()
                 }
                 return
             }
@@ -157,31 +160,20 @@ class ImageLocationFragment : WizardFragment() {
     }
 
     fun getRemoteImageUri(context: WizardActivity): Uri {
-        val text = context.findViewById<EditText>(R.id.img_url_textview).text.toString()
+        val text = img_url_textview.text.toString()
         return Uri.parse(text)
     }
 
     fun updateFileButtonLabel(context: WizardActivity) {
-        val button = context.findViewById<Button>(R.id.pick_file_btn)
+        val button = pick_file_btn
         val uri = StateKeeper.imageFile
 
-        if (uri != null && uri.scheme != null && !uri.scheme!!.startsWith("http")) {
+        val text = uri?.getFileName(context)
-            val cursor = context.contentResolver.query(uri, null, null, null, null, null)
 
-            try {
+        if (text != null)
-                if (cursor != null && cursor.moveToFirst()) {
+            button.text = text
-                    button.text = cursor.getString(
+        else
-                            cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME))
+            button.text = getString(R.string.pick_a_file)
-                }
-                return
-            } catch (e: RuntimeException) {
-                Log.e(TAG, "Error retrieving file name", e)
-            } finally {
-                cursor?.close()
-            }
-        }
-
-        button.text = getString(R.string.pick_a_file)
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {

app/src/main/java/eu/depau/ddroid/fragments/USBDriveFragment.kt

@@ -1,70 +0,0 @@
-package eu.depau.ddroid.fragments
-
-import android.os.Build
-import android.os.Bundle
-import android.support.annotation.RequiresApi
-import android.util.Log
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import com.github.mjdev.libaums.UsbMassStorageDevice
-import eu.depau.ddroid.R
-import eu.depau.ddroid.StateKeeper
-import eu.depau.ddroid.abc.WizardFragment
-import eu.depau.ddroid.values.WizardStep
-
-
-/**
- * A placeholder fragment containing a simple view.
- */
-class USBDriveFragment : WizardFragment() {
-    val TAG = "USBDriveFragment"
-    val ACTION_USB_PERMISSION = "eu.depau.ddroid.USB_PERMISSION"
-
-
-    override fun nextStep(view: View) {
-//        if (StateKeeper.flashMethod == null)
-//            Snackbar.make(view, "Please select writing method", Snackbar.LENGTH_LONG).show()
-//        else
-//            (activity as WizardActivity).goToNewFragment(ImageLocationFragment())
-    }
-
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
-                              savedInstanceState: Bundle?): View? {
-        StateKeeper.currentFragment = this
-        StateKeeper.wizardStep = WizardStep.SELECT_USB_DRIVE
-
-        return inflater.inflate(R.layout.fragment_select_usb_drive, container, false)
-    }
-
-    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
-    override fun onButtonClicked(view: View) {
-//        val usbManager = activity!!.getSystemService(Context.USB_SERVICE) as UsbManager
-
-        val devices = UsbMassStorageDevice.getMassStorageDevices(activity)
-
-        for (device in devices) {
-            Log.d(TAG, """USB device ${device.usbDevice.deviceName}
-                | proto ${device.usbDevice.deviceProtocol}
-                | id ${device.usbDevice.deviceId}
-                | class ${device.usbDevice.deviceClass}
-                | subclass ${device.usbDevice.deviceSubclass}
-                | iface count ${device.usbDevice.interfaceCount}
-                | manuf name ${device.usbDevice.manufacturerName}
-                | product name ${device.usbDevice.productName}
-                | id ${device.usbDevice.vendorId}:${device.usbDevice.productId}
-            """.trimMargin())
-//            val permissionIntent = PendingIntent.getBroadcast(activity, 0, Intent(MY_PERMISSIONS_REQUEST_USB_DRIVE), 0)
-//            usbManager.requestPermission(device.usbDevice, permissionIntent)
-//            // before interacting with a device you need to call init()!
-//            device.init()
-//
-//            // Only uses the first partition on the device
-//            val currentFs = device.partitions[0].fileSystem
-//            Log.d(TAG, "Capacity: " + currentFs.capacity)
-//            Log.d(TAG, "Occupied Space: " + currentFs.occupiedSpace)
-//            Log.d(TAG, "Free Space: " + currentFs.freeSpace)
-//            Log.d(TAG, "Chunk size: " + currentFs.chunkSize)
-        }
-    }
-}

app/src/main/java/eu/depau/ddroid/fragments/UsbDriveFragment.kt

@@ -0,0 +1,171 @@
+package eu.depau.ddroid.fragments
+
+import android.content.Context
+import android.hardware.usb.UsbDevice
+import android.hardware.usb.UsbManager
+import android.os.Bundle
+import android.support.design.widget.Snackbar
+import android.support.v4.widget.SwipeRefreshLayout
+import android.support.v7.widget.LinearLayoutManager
+import android.support.v7.widget.RecyclerView
+import android.view.*
+import com.github.mjdev.libaums.UsbMassStorageDevice
+import eu.depau.ddroid.R
+import eu.depau.ddroid.StateKeeper
+import eu.depau.ddroid.abc.ClickListener
+import eu.depau.ddroid.abc.WizardActivity
+import eu.depau.ddroid.abc.WizardFragment
+import eu.depau.ddroid.activities.MainActivity
+import eu.depau.ddroid.utils.UsbDrivesRecyclerViewAdapter
+import eu.depau.ddroid.utils.name
+import eu.depau.ddroid.utils.snackbar
+import eu.depau.ddroid.values.WizardStep
+import kotlinx.android.synthetic.main.activity_main.*
+import kotlinx.android.synthetic.main.fragment_select_usb_drive.view.*
+
+
+/**
+ * A placeholder fragment containing a simple view.
+ */
+class UsbDriveFragment : WizardFragment(), SwipeRefreshLayout.OnRefreshListener {
+    val TAG = "UsbDriveFragment"
+
+    private lateinit var recyclerView: RecyclerView
+    private lateinit var viewAdapter: UsbDrivesRecyclerViewAdapter
+    private lateinit var viewManager: RecyclerView.LayoutManager
+    private lateinit var refreshLayout: SwipeRefreshLayout
+
+
+    class RecyclerViewTouchListener(context: Context, val recyclerView: RecyclerView, val clickListener: ClickListener) : RecyclerView.OnItemTouchListener {
+        private var gestureDetector: GestureDetector
+
+        init {
+            gestureDetector = GestureDetector(context, object : GestureDetector.SimpleOnGestureListener() {
+                override fun onSingleTapUp(e: MotionEvent): Boolean {
+                    return true
+                }
+
+                override fun onLongPress(e: MotionEvent) {
+                    val child = recyclerView.findChildViewUnder(e.x, e.y)
+                    if (child != null)
+                        clickListener.onLongClick(child, recyclerView.getChildAdapterPosition(child))
+                }
+            })
+        }
+
+        override fun onTouchEvent(rv: RecyclerView, e: MotionEvent) {}
+
+        override fun onInterceptTouchEvent(rv: RecyclerView, e: MotionEvent): Boolean {
+            val child = rv.findChildViewUnder(e.x, e.y)
+            if (child != null && gestureDetector.onTouchEvent(e)) {
+                clickListener.onClick(child, rv.getChildAdapterPosition(child))
+            }
+            return false
+        }
+
+        override fun onRequestDisallowInterceptTouchEvent(disallowIntercept: Boolean) {}
+    }
+
+
+    override fun onRefresh() {
+        loadUsbDevices()
+    }
+
+
+    override fun nextStep(view: View?) {
+        (activity as WizardActivity).goToNewFragment(ConfirmInfoFragment())
+    }
+
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
+                              savedInstanceState: Bundle?): View? {
+        StateKeeper.currentFragment = this
+        StateKeeper.wizardStep = WizardStep.SELECT_USB_DRIVE
+
+        val view = inflater.inflate(R.layout.fragment_select_usb_drive, container, false)
+
+        refreshLayout = view.usbdevs_refresh_layout
+        refreshLayout.setOnRefreshListener(this)
+        refreshLayout.post {
+            refreshLayout.isRefreshing = true
+            loadUsbDevices()
+        }
+
+        viewManager = LinearLayoutManager(activity)
+        recyclerView = view.usbdevs_recycler_view
+
+        recyclerView.addOnItemTouchListener(RecyclerViewTouchListener(activity!!, recyclerView, object : ClickListener {
+            override fun onClick(view: View, position: Int) {
+                val device = viewAdapter.get(position)
+                val manager = activity!!.getSystemService(Context.USB_SERVICE) as UsbManager
+                manager.requestPermission(device.usbDevice, (activity as MainActivity).mUsbPermissionIntent)
+            }
+
+            override fun onLongClick(view: View, position: Int) {}
+        }))
+
+        return view
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setHasOptionsMenu(true)
+    }
+
+    fun loadUsbDevices() {
+        try {
+            viewAdapter = UsbDrivesRecyclerViewAdapter(UsbMassStorageDevice.getMassStorageDevices(activity))
+
+            recyclerView.apply {
+                setHasFixedSize(true)
+                layoutManager = viewManager
+                adapter = viewAdapter
+            }
+        } finally {
+            refreshLayout.isRefreshing = false
+        }
+    }
+
+    override fun onFragmentAdded(activity: WizardActivity) {
+        activity.fab.hide()
+    }
+
+    override fun onFragmentRemoving(activity: WizardActivity) {
+        activity.fab.show()
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu, menuInflater: MenuInflater) {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        menuInflater.inflate(R.menu.usb_devices_menu, menu)
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        return when (item.itemId) {
+            R.id.action_refresh -> {
+                loadUsbDevices()
+                true
+            }
+            else -> super.onOptionsItemSelected(item)
+        }
+    }
+
+    fun onUsbPermissionResult(usbDevice: UsbDevice?, granted: Boolean) {
+        if (!granted) {
+            if (usbDevice != null) {
+                recyclerView.snackbar(getString(R.string.usb_perm_denied) + usbDevice.name)
+            } else {
+                recyclerView.snackbar(getString(R.string.usb_perm_denied_noname))
+            }
+            return
+        }
+
+        StateKeeper.usbDevice = usbDevice
+        StateKeeper.usbMassStorageDevice = UsbMassStorageDevice.getMassStorageDevices(activity).find { it.usbDevice == usbDevice }
+
+        nextStep(null)
+    }
+}
+

app/src/main/java/eu/depau/ddroid/services/UsbAPIWriteService.kt

@@ -0,0 +1,71 @@
+package eu.depau.ddroid.services
+
+import android.content.Intent
+import android.hardware.usb.UsbDevice
+import android.net.Uri
+import com.github.mjdev.libaums.UsbMassStorageDevice
+import eu.depau.ddroid.abc.UsbWriteService
+import eu.depau.ddroid.utils.getFileSize
+import eu.depau.ddroid.utils.name
+import java.nio.ByteBuffer
+
+class UsbAPIWriteService : UsbWriteService("UsbAPIWriteService") {
+    class Action {
+        val WRITE_IMAGE = "eu.depau.ddroid.action.API_WRITE_IMAGE"
+        val WRITE_CANCEL = "eu.depau.ddroid.action.API_WRITE_CANCEL"
+    }
+
+    override fun onHandleIntent(intent: Intent?) {
+        val uri: Uri = intent!!.data!!
+        val usbDevice: UsbDevice = intent.getParcelableExtra("usbDevice")
+
+        startForeground(FOREGROUND_ID, buildForegroundNotification(usbDevice.name, uri, -1, -1))
+
+        try {
+            val notify = { bytes: Long, total: Long -> updateNotification(usbDevice.name, uri, bytes, total) }
+            writeImage(usbDevice, uri, notify)
+        } finally {
+            stopForeground(true)
+        }
+    }
+
+    private fun getUsbMSDevice(usbDevice: UsbDevice): UsbMassStorageDevice? {
+        val msDevs = UsbMassStorageDevice.getMassStorageDevices(this)
+
+        for (dev in msDevs) {
+            if (dev.usbDevice == usbDevice)
+                return dev
+        }
+
+        return null
+    }
+
+    private fun writeImage(usbDevice: UsbDevice, uri: Uri, notify: (Long, Long) -> Unit): Long {
+        val msDev = getUsbMSDevice(usbDevice)!!
+        msDev.init()
+
+        val blockDev = msDev.blockDevice
+        val byteBuffer = ByteBuffer.allocate(blockDev.blockSize)
+        val imageSize = uri.getFileSize(this)
+        val inputStream = contentResolver.openInputStream(uri)!!
+
+        var readBytes: Int
+        var offset = 0L
+
+        while (true) {
+            readBytes = inputStream.read(byteBuffer.array()!!)
+            if (readBytes < 0)
+                break
+
+            byteBuffer.position(readBytes)
+            blockDev.write(offset, byteBuffer)
+            offset++
+
+            notify(offset * blockDev.blockSize, imageSize)
+        }
+
+        msDev.close()
+
+        return offset * blockDev.blockSize
+    }
+}

app/src/main/java/eu/depau/ddroid/utils/ContextToast.kt

@@ -0,0 +1,8 @@
+package eu.depau.ddroid.utils
+
+import android.content.Context
+import android.widget.Toast
+
+fun Context.toast(message: CharSequence, duration: Int = Toast.LENGTH_LONG) {
+    Toast.makeText(this, message, duration).show()
+}

app/src/main/java/eu/depau/ddroid/utils/NumberToSizeString.kt

@@ -0,0 +1,18 @@
+package eu.depau.ddroid.utils
+
+// https://stackoverflow.com/a/3758880/1124621
+
+private fun <T> humanReadableByteCount(bytes: T, si: Boolean = false): String where T : Comparable<T>, T : Number {
+    val unit: Long = if (si) 1000 else 1024
+    if (bytes.toLong() < unit) return bytes.toString() + " B"
+    val exp = (Math.log(bytes.toDouble()) / Math.log(unit.toDouble())).toInt()
+    val pre = (if (si) "kMGTPE" else "KMGTPE")[exp - 1] + if (si) "" else "i"
+    return String.format("%.1f %sB", bytes.toDouble() / Math.pow(unit.toDouble(), exp.toDouble()), pre)
+}
+
+fun Long.toHRSize(si: Boolean = false) = humanReadableByteCount(this, si)
+fun Float.toHRSize(si: Boolean = false) = humanReadableByteCount(this, si)
+fun Double.toHRSize(si: Boolean = false) = humanReadableByteCount(this, si)
+fun Int.toHRSize(si: Boolean = false) = humanReadableByteCount(this, si)
+fun Byte.toHRSize(si: Boolean = false) = humanReadableByteCount(this, si)
+fun Short.toHRSize(si: Boolean = false) = humanReadableByteCount(this, si)

app/src/main/java/eu/depau/ddroid/utils/UriGetDisplayName.kt

@@ -0,0 +1,29 @@
+package eu.depau.ddroid.utils
+
+import android.content.Context
+import android.net.Uri
+import android.provider.OpenableColumns
+
+
+fun Uri.getFileName(context: Context): String? {
+    val TAG = "UriGetFileNameExt"
+    var result: String? = null
+
+    if (this.scheme == "content") {
+        val cursor = context.getContentResolver().query(this, null, null, null, null)
+        cursor.use {
+            if (it != null && it.moveToFirst()) {
+                result = it.getString(it.getColumnIndex(OpenableColumns.DISPLAY_NAME))
+            }
+        }
+    }
+    if (result == null) {
+        result = this.getPath()
+        val cut = result!!.lastIndexOf('/')
+        if (cut != -1) {
+            result = result!!.substring(cut + 1)
+        }
+    }
+
+    return result
+}

app/src/main/java/eu/depau/ddroid/utils/UriGetFileSize.kt

@@ -0,0 +1,39 @@
+package eu.depau.ddroid.utils
+
+import android.content.ContentResolver
+import android.content.Context
+import android.database.Cursor
+import android.database.SQLException
+import android.net.Uri
+import android.provider.OpenableColumns
+import java.io.File
+
+// https://github.com/android-rcs/rcsjta/blob/master/RI/src/com/gsma/rcs/ri/utils/FileUtils.java#L214
+
+fun Uri.getFileSize(context: Context): Long {
+    when (this.scheme) {
+        ContentResolver.SCHEME_FILE -> {
+            val f = File(this.path)
+            return f.length()
+        }
+
+        ContentResolver.SCHEME_CONTENT -> {
+            val cursor: Cursor? = context.contentResolver.query(this, null, null, null, null)
+
+            cursor.use {
+                if (it == null) {
+                    throw SQLException("Failed to query file $this")
+                }
+                return if (it.moveToFirst()) {
+                    java.lang.Long.valueOf(it.getString(it
+                            .getColumnIndexOrThrow(OpenableColumns.SIZE)))
+                } else {
+                    throw IllegalArgumentException(
+                            "Error in retrieving this size form the URI")
+                }
+            }
+        }
+
+        else -> throw IllegalArgumentException("Unsupported URI scheme")
+    }
+}

app/src/main/java/eu/depau/ddroid/utils/UsbDeviceVidPidName.kt

@@ -0,0 +1,17 @@
+package eu.depau.ddroid.utils
+
+import android.hardware.usb.UsbDevice
+import android.os.Build
+
+fun formatID(id: Int): String = Integer.toHexString(id).padStart(4,'0')
+
+val UsbDevice.vidpid: String
+    get() = "${formatID(this.vendorId)}:${formatID(this.productId)}"
+
+
+val UsbDevice.name: String
+    get() = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+        "${this.manufacturerName} ${this.productName}"
+    } else {
+        this.deviceName
+    }

app/src/main/java/eu/depau/ddroid/utils/UsbDrivesRecyclerViewAdapter.kt

@@ -0,0 +1,50 @@
+package eu.depau.ddroid.utils
+
+import android.annotation.SuppressLint
+import android.os.Build
+import android.support.v7.widget.RecyclerView
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import android.widget.RelativeLayout
+import android.widget.TextView
+import com.github.mjdev.libaums.UsbMassStorageDevice
+import eu.depau.ddroid.R
+import kotlinx.android.synthetic.main.usb_device_row.view.*
+import java.lang.Integer
+
+class UsbDrivesRecyclerViewAdapter(private val dataset: Array<UsbMassStorageDevice>) : RecyclerView.Adapter<UsbDrivesRecyclerViewAdapter.ViewHolder>() {
+
+    class ViewHolder(val relLayout: RelativeLayout) : RecyclerView.ViewHolder(relLayout)
+
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int):
+            UsbDrivesRecyclerViewAdapter.ViewHolder {
+
+        val relLayout = LayoutInflater.from(parent.context)
+                .inflate(R.layout.usb_device_row, parent, false) as RelativeLayout
+        return ViewHolder(relLayout)
+    }
+
+
+    @SuppressLint("SetTextI18n")
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val usbDevice = dataset[position].usbDevice
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            holder.relLayout.name.text = "${usbDevice.manufacturerName} ${usbDevice.productName}"
+            holder.relLayout.devpath.text = usbDevice.deviceName
+            holder.relLayout.vidpid.text = usbDevice.vidpid
+        } else {
+            holder.relLayout.name.text = usbDevice.deviceName
+            holder.relLayout.devpath.text = usbDevice.vidpid
+        }
+    }
+
+
+    override fun getItemCount(): Int = dataset.size
+
+
+    fun get(position: Int): UsbMassStorageDevice {
+        return dataset[position]
+    }
+}

app/src/main/java/eu/depau/ddroid/utils/ViewSnackbar.kt

@@ -0,0 +1,8 @@
+package eu.depau.ddroid.utils
+
+import android.support.design.widget.Snackbar
+import android.view.View
+
+fun View.snackbar(message: CharSequence, duration: Int = Snackbar.LENGTH_LONG) {
+    Snackbar.make(this, message, duration).show()
+}

app/src/main/java/eu/depau/ddroid/values/WizardStep.kt

@@ -3,5 +3,6 @@ package eu.depau.ddroid.values
 enum class WizardStep {
     SELECT_FLASH_METHOD,
     SELECT_LOCATION,
-    SELECT_USB_DRIVE
+    SELECT_USB_DRIVE,
+    CONFIRM
 }

app/src/main/res/drawable/ic_usb_white_24dp.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24.0" android:viewportWidth="24.0"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FF000000" android:pathData="M15,7v4h1v2h-3V5h2l-3,-4 -3,4h2v8H8v-2.07c0.7,-0.37 1.2,-1.08 1.2,-1.93 0,-1.21 -0.99,-2.2 -2.2,-2.2 -1.21,0 -2.2,0.99 -2.2,2.2 0,0.85 0.5,1.56 1.2,1.93V13c0,1.11 0.89,2 2,2h3v3.05c-0.71,0.37 -1.2,1.1 -1.2,1.95 0,1.22 0.99,2.2 2.2,2.2 1.21,0 2.2,-0.98 2.2,-2.2 0,-0.85 -0.49,-1.58 -1.2,-1.95V15h3c1.11,0 2,-0.89 2,-2v-2h1V7h-4z"/>
+</vector>

app/src/main/res/layout/fragment_confirminfo.xml

@@ -0,0 +1,145 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context=".fragments.ConfirmInfoFragment">
+    <!--tools:showIn="@layout/activity_main"-->
+
+
+    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:background="?android:attr/selectableItemBackground"
+                    android:clickable="true"
+                    android:focusable="true"
+                    android:orientation="vertical"
+                    android:paddingBottom="@dimen/row_padding_vertical"
+                    android:paddingLeft="@dimen/activity_horizontal_margin"
+                    android:paddingRight="@dimen/activity_horizontal_margin"
+                    android:paddingTop="@dimen/row_padding_vertical">
+
+        <TextView
+            android:id="@+id/confirm_sel_method_title"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_alignParentTop="true"
+            android:textColor="@color/name"
+            android:textSize="16sp"
+            android:textStyle="bold"
+            android:ellipsize="end"
+            android:text="@string/selected_method"/>
+
+        <TextView
+            android:id="@+id/confirm_sel_method"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_below="@id/confirm_sel_method_title"/>
+    </RelativeLayout>
+
+    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:background="?android:attr/selectableItemBackground"
+                    android:clickable="true"
+                    android:focusable="true"
+                    android:orientation="vertical"
+                    android:paddingBottom="@dimen/row_padding_vertical"
+                    android:paddingLeft="@dimen/activity_horizontal_margin"
+                    android:paddingRight="@dimen/activity_horizontal_margin"
+                    android:paddingTop="@dimen/row_padding_vertical">
+
+        <TextView
+            android:id="@+id/confirm_sel_image_title"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_alignParentTop="true"
+            android:textColor="@color/name"
+            android:textSize="16sp"
+            android:textStyle="bold"
+            android:ellipsize="end"
+            android:text="@string/selected_image"/>
+
+        <TextView
+            android:id="@+id/confirm_sel_image"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_below="@id/confirm_sel_image_title"/>
+
+
+        <TextView
+            android:id="@+id/confirm_sel_image_size"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_alignParentEnd="true"
+            android:textColor="@color/info"/>
+    </RelativeLayout>
+
+
+    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:background="?android:attr/selectableItemBackground"
+                    android:clickable="true"
+                    android:focusable="true"
+                    android:orientation="vertical"
+                    android:paddingBottom="@dimen/row_padding_vertical"
+                    android:paddingLeft="@dimen/activity_horizontal_margin"
+                    android:paddingRight="@dimen/activity_horizontal_margin"
+                    android:paddingTop="@dimen/row_padding_vertical">
+
+        <TextView
+            android:id="@+id/confirm_sel_usbdev_title"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_alignParentTop="true"
+            android:textColor="@color/name"
+            android:textSize="16sp"
+            android:textStyle="bold"
+            android:ellipsize="end"
+            android:text="@string/selected_usbdev"/>
+
+        <TextView
+            android:id="@+id/confirm_sel_usbdev"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_below="@id/confirm_sel_usbdev_title"/>
+
+        <TextView
+            android:id="@+id/confirm_sel_usbdev_size"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_alignParentEnd="true"
+            android:textColor="@color/info"/>
+
+    </RelativeLayout>
+
+
+
+    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:background="?android:attr/selectableItemBackground"
+                    android:clickable="true"
+                    android:focusable="true"
+                    android:orientation="vertical"
+                    android:paddingBottom="@dimen/row_padding_vertical"
+                    android:paddingLeft="@dimen/activity_horizontal_margin"
+                    android:paddingRight="@dimen/activity_horizontal_margin"
+                    android:paddingTop="@dimen/row_padding_vertical">
+
+        <TextView
+            android:id="@+id/confirm_extra_info"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_alignParentTop="true"
+            android:textColor="@color/name"
+            android:textSize="16sp"
+            android:ellipsize="end"/>
+
+
+    </RelativeLayout>
+
+</LinearLayout>

app/src/main/res/layout/fragment_select_flash_method.xml

@@ -24,6 +24,7 @@
             android:id="@+id/flash_dd_root_radio"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:enabled="false"
             android:text="@string/flash_dd_root"
             android:onClick="onRadioButtonClicked"/>
 
@@ -31,6 +32,7 @@
             android:id="@+id/flash_unetbootin_radio"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:enabled="false"
             android:text="@string/flash_unetbootin"
             android:onClick="onRadioButtonClicked"/>
 
@@ -38,6 +40,7 @@
             android:id="@+id/flash_woeusb_radio"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:enabled="false"
             android:text="@string/flash_woeusb"
             android:onClick="onRadioButtonClicked"/>
 

app/src/main/res/layout/fragment_select_location.xml

@@ -31,6 +31,7 @@
             android:id="@+id/download_img_radio"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:enabled="false"
             android:onClick="onRadioButtonClicked"
             android:text="@string/download_image_from_url"/>
 

app/src/main/res/layout/fragment_select_usb_drive.xml

@@ -1,20 +1,16 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
+
+<android.support.v4.widget.SwipeRefreshLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/usbdevs_refresh_layout"
-    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
+    android:layout_height="match_parent">
-    android:orientation="vertical"
-    tools:context=".fragments.USBDriveFragment"
-    tools:showIn="@layout/activity_main">
 
+    <android.support.v7.widget.RecyclerView
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:id="@+id/usbdevs_recycler_view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:scrollbars="vertical"/>
 
-
+</android.support.v4.widget.SwipeRefreshLayout>
-    <Button
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:onClick="onButtonClicked"
-        android:text="Do USB stuff"/>
-
-</LinearLayout>

app/src/main/res/layout/usb_device_row.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="?android:attr/selectableItemBackground"
+                android:clickable="true"
+                android:focusable="true"
+                android:orientation="vertical"
+                android:paddingBottom="@dimen/row_padding_vertical"
+                android:paddingLeft="@dimen/activity_horizontal_margin"
+                android:paddingRight="@dimen/activity_horizontal_margin"
+                android:paddingTop="@dimen/row_padding_vertical">
+
+    <TextView
+        android:id="@+id/name"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentTop="true"
+        android:textColor="@color/name"
+        android:textSize="16sp"
+        android:textStyle="bold"
+        android:ellipsize="end"/>
+
+    <TextView
+        android:id="@+id/devpath"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_below="@id/name"/>
+
+    <TextView
+        android:id="@+id/vidpid"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentEnd="true"
+        android:textColor="@color/info"/>
+
+</RelativeLayout>

app/src/main/res/menu/usb_devices_menu.xml

@@ -0,0 +1,10 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+      xmlns:app="http://schemas.android.com/apk/res-auto"
+      xmlns:tools="http://schemas.android.com/tools"
+      tools:context="eu.depau.ddroid.fragments.UsbDriveFragment">
+    <item
+        android:id="@+id/action_refresh"
+        android:orderInCategory="100"
+        android:title="@string/action_refresh"
+        app:showAsAction="never"/>
+</menu>

app/src/main/res/values/colors.xml

@@ -3,4 +3,6 @@
     <color name="colorPrimary">#3F51B5</color>
     <color name="colorPrimaryDark">#303F9F</color>
     <color name="colorAccent">#FF4081</color>
+    <color name="info">#999999</color>
+    <color name="name">#222222</color>
 </resources>

app/src/main/res/values/dimens.xml

@@ -1,3 +1,6 @@
 <resources>
     <dimen name="fab_margin">16dp</dimen>
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+    <dimen name="row_padding_vertical">10dp</dimen>
 </resources>

app/src/main/res/values/strings.xml

@@ -14,4 +14,15 @@
     <string name="select_image_location">Please select image location</string>
     <string name="provide_image_file">Please provide an image file</string>
     <string name="storage_perm_required_explaination">Storage permission required to download images</string>
+    <string name="action_refresh">Refresh</string>
+    <string name="usb_perm_denied">Permission denied for</string>
+    <string name="usb_perm_denied_noname">Permission denied for USB device</string>
+    <string name="selected_image">Selected image:</string>
+    <string name="selected_method">Selected writing method:</string>
+    <string name="selected_usbdev">Selected USB device:</string>
+    <string name="unknown_filename">Unknown filename</string>
+    <string name="please_select_writing_method">Please select writing method</string>
+    <string name="image_bigger_than_usb">Image is bigger than the USB drive, so it can\'t be written</string>
+    <string name="cant_read_usbdev">Cannot read USB device</string>
+    <string name="tap_next_to_write">Tap Next to write the image to the USB drive</string>
 </resources>

build.gradle

@@ -32,6 +32,7 @@ task clean(type: Delete) {
 }
 
 
+// For libaums
 ext {
     bintrayRepo = 'maven'
 

libaums

@@ -1 +1 @@
-Subproject commit a57ae278535946db69e2e1ea7f02171d002198a5
+Subproject commit 310bc4680581c845ab2f30474eee02b7b238669f